Hi, since 9.16 the bind9 package is not building the bind9 shared libraries anymore, which have previously been used by isc-dhcp instead of the bundled bind9 source. Ondrej had filed Bug#942502 about this last October.
bind9 9.16 has now been uploaded to unstable, but (among two RC bugs) the uninstallability of isc-dhcp prevents migration to testing. Ondrej has also uploaded src:bind9-libs, which take over the -dev packages and shared libraries with the most recent 9.11 code. If I'm not mistaken a simple rebuild of src:isc-dhcp, possibly with tightened build-dep on libbind-export-dev to ensure the use of the new src:bind9-libs package should be enough. Bug#942502: not using the embedded bind9 source, but the new dedicated source package Bug#954736: fixed by rebuilding isc-dhcp against the new libdns-export This would unentangle bind9 and isc-dhcp and allow the latter to propagate to testing. Is there something I'm missing? Bernhard